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NASA Science Missions

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Mission Key

  • Universe
  • Solar System
  • Sun
  • Earth
Past
GALEX Mission Image

The Galaxy Evolution Explorer (GALEX) was an orbiting space... View Mission

Past
illustration of galileo spacecraft

The Galileo mission consists of two spacecraft: an orbiter and an atmospheric probe. Launched... View Mission

Future
GEDI Mission

The Global Ecosystem Dynamics Investigation (GEDI) produces the first high resolution laser... View Mission

Past
GEMS Mission Image

The Gravity and Extreme Magnetism Small Explorer (GEMS) did not pass its confirmation review in... View Mission

Past
Genesis Mission Image

The primary objective of the Genesis mission was to collect samples of solar wind particles and... View Mission

Past
Geosat

The U.S. Navy GEOdetic SATellite, GEOSAT, was launched on 12 March 1985, into an 800-km, 108-... View Mission

Operating

The GEOTAIL mission is a collaborative project undertaken by the Institute of Space and... View Mission

Operating

The launch of the prototype Synchronous Meteorological Satellite, SMS-A, in May 1974 inaugurated... View Mission

Operating
GOES-R

The Geostationary Operational Environmental Satellite-R Series (GOES-R) is the next generation... View Mission

Future
illustration of Gold spacecraft with gold light in background

The Global-scale Observations of the Limb and Disk (GOLD) mission of opportunity will fly an... View Mission

Operating

Global Precipitation Measurement (GPM) is an international satellite mission to provide next-... View Mission

Operating
GRACE

The primary goal of the GRACE mission is to accurately map... View Mission

Future

The Gravity Recovery and Climate Experiment Follow-on (GRACE-FO) mission will allow scientists... View Mission

Past
GRAIL Mission Image

The Gravity Recovery and Interior Laboratory (GRAIL) mission was competitively selected through... View Mission

Past
Gravity Probe B

NASA’s Marshall Space Flight Center and Stanford University developed a sophisticated... View Mission

Past
GRIP Mission Image

The Genesis and Rapid Intensification Processes (GRIP) experiment was a NASA Earth science field... View Mission

Past
HALCA Mission Image

Launched on February 12, 1997 HALCA, also called VSOP, Muses-B or Haruka (meaning "far away"),... View Mission

Future

The HaloSat mission will address the question: Is there a massive, extended, hot halo around the... View Mission

Past

The primary scientific objective of the Hayabusa (formerly Muses-C) mission was to collect a... View Mission

Past
Herschel Mission Image

The Herschel Space Observatory was a space-based telescope that... View Mission

Past
HETE 1 Mission Image

The prime objective of the HETE spacecraft was to carry out the first multiwavelength study of... View Mission

Past
HETE 2 Mission Image

After the launch failure of the HETE-1 spacecraft, it was determined that gamma ray burst... View Mission

Operating

The Hinode (Solar-B) is a highly sophisticated observational satellite equipped with three... View Mission

Past
Hipparcos Mission Images

ESA's Hipparcos was the first space mission dedicated to measuring the positions, distances,... View Mission

Past
Hitomi Mission Images

ASTRO-H (formerly known as NeXT and renamed Hitomi) was launched on February 17, 2016 by the... View Mission

Past
HS3

Close to 100 million Americans now live within 50 miles of a coastline, thus exposing them to... View Mission

Operating

The Hubble Space Telescope's launch in 1990 sped humanity to one of its greatest advances in... View Mission

Operating

IBEX is the first mission designed to map the entire region of the boundary of our Solar System... View Mission

Past

ICESat (Ice, Cloud, and land Elevation Satellite) was the benchmark Earth Observing System... View Mission

Future

ICESat (Ice, Cloud,and land Elevation Satellite) is the benchmark Earth Observing System mission... View Mission

Future

ICON is a single spacecraft mission dedicated to understanding neutral-ion coupling in the Earth... View Mission

Past
IEH-3

Seven experiments made up the IEH-3 payload on the STS-95 Space Shuttle mission. The seven... View Mission